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<a name="1" href="#1">1</a>   <em>/**<em>*</em></em>
<a name="2" href="#2">2</a>   <em> * $Id: BooleanConverter.html 10 2008-10-01 10:56:15Z azeckoski $</em>
<a name="3" href="#3">3</a>   <em> * $URL: http://reflectutils.googlecode.com/svn/maven/site/xref/org/azeckoski/reflectutils/converters/BooleanConverter.html $</em>
<a name="4" href="#4">4</a>   <em> * BooleanConverter.java - genericdao - Sep 8, 2008 11:42:27 AM - azeckoski</em>
<a name="5" href="#5">5</a>   <em> **************************************************************************</em>
<a name="6" href="#6">6</a>   <em> * Copyright (c) 2008 Aaron Zeckoski</em>
<a name="7" href="#7">7</a>   <em> * Licensed under the Apache License, Version 2.0</em>
<a name="8" href="#8">8</a>   <em> * </em>
<a name="9" href="#9">9</a>   <em> * A copy of the Apache License has been included in this </em>
<a name="10" href="#10">10</a>  <em> * distribution and is available at: <a href="http://www.apache.org/licenses/LICENSE-2.0.txt" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0.txt</a></em>
<a name="11" href="#11">11</a>  <em> *</em>
<a name="12" href="#12">12</a>  <em> * Aaron Zeckoski (azeckoski @ gmail.com) (aaronz @ vt.edu) (aaron @ caret.cam.ac.uk)</em>
<a name="13" href="#13">13</a>  <em> */</em>
<a name="14" href="#14">14</a>  
<a name="15" href="#15">15</a>  <strong>package</strong> org.azeckoski.reflectutils.converters;
<a name="16" href="#16">16</a>  
<a name="17" href="#17">17</a>  <strong>import</strong> org.azeckoski.reflectutils.ConversionUtils;
<a name="18" href="#18">18</a>  <strong>import</strong> org.azeckoski.reflectutils.converters.api.Converter;
<a name="19" href="#19">19</a>  
<a name="20" href="#20">20</a>  
<a name="21" href="#21">21</a>  <em>/**<em>*</em></em>
<a name="22" href="#22">22</a>  <em> * Converts objects into booleans (by default this will return Boolean.FALSE)&lt;br/></em>
<a name="23" href="#23">23</a>  <em> * Special handling:&lt;br/></em>
<a name="24" href="#24">24</a>  <em> * Numerics greater than 0 are true, less than or equal are false &lt;br/></em>
<a name="25" href="#25">25</a>  <em> * </em>
<a name="26" href="#26">26</a>  <em> * &lt;p>Case is ignored when converting values to true or false.&lt;/p></em>
<a name="27" href="#27">27</a>  <em> * &lt;br/></em>
<a name="28" href="#28">28</a>  <em> * Based on code from commons bean utils but updated for generics and removed complexity and (mis)usage of Throwable&lt;br/></em>
<a name="29" href="#29">29</a>  <em> * </em>
<a name="30" href="#30">30</a>  <em> * @author Aaron Zeckoski (azeckoski @ gmail.com)</em>
<a name="31" href="#31">31</a>  <em> */</em>
<a name="32" href="#32">32</a>  <strong>public</strong> <strong>class</strong> <a href="../../../../org/azeckoski/reflectutils/converters/BooleanConverter.html">BooleanConverter</a> implements Converter&lt;Boolean> {
<a name="33" href="#33">33</a>  
<a name="34" href="#34">34</a>      <strong>public</strong> Boolean convert(Object value) {
<a name="35" href="#35">35</a>  
<a name="36" href="#36">36</a>          Boolean converted = <strong>null</strong>;
<a name="37" href="#37">37</a>          <strong>if</strong> (value instanceof Number) {
<a name="38" href="#38">38</a>              <em class="comment">// numbers</em>
<a name="39" href="#39">39</a>              <strong>if</strong> (((Number)value).intValue() > 0) {
<a name="40" href="#40">40</a>                  converted = Boolean.TRUE;
<a name="41" href="#41">41</a>              } <strong>else</strong> {
<a name="42" href="#42">42</a>                  converted = Boolean.FALSE;
<a name="43" href="#43">43</a>              }
<a name="44" href="#44">44</a>          } <strong>else</strong> {
<a name="45" href="#45">45</a>              <em class="comment">// strings and all others</em>
<a name="46" href="#46">46</a>              String stringValue = value.toString();
<a name="47" href="#47">47</a>              <strong>if</strong> (stringValue != <strong>null</strong>) {
<a name="48" href="#48">48</a>                  stringValue = stringValue.toLowerCase();
<a name="49" href="#49">49</a>                  <strong>if</strong> (<span class="string">"0"</span>.equals(stringValue) || <span class="string">""</span>.equals(stringValue)) {
<a name="50" href="#50">50</a>                      converted = Boolean.FALSE;
<a name="51" href="#51">51</a>                  } <strong>else</strong> <strong>if</strong> (<span class="string">"1"</span>.equals(stringValue)) {
<a name="52" href="#52">52</a>                      converted = Boolean.TRUE;
<a name="53" href="#53">53</a>                  } <strong>else</strong> {
<a name="54" href="#54">54</a>                      <strong>for</strong> (<strong>int</strong> i=0; i&lt;trueStrings.length; ++i) {
<a name="55" href="#55">55</a>                          <strong>if</strong> (trueStrings[i].equals(stringValue)) {
<a name="56" href="#56">56</a>                              converted = Boolean.TRUE;
<a name="57" href="#57">57</a>                          }
<a name="58" href="#58">58</a>                      }
<a name="59" href="#59">59</a>                      <strong>for</strong> (<strong>int</strong> i=0; i&lt;falseStrings.length; ++i) {
<a name="60" href="#60">60</a>                          <strong>if</strong> (falseStrings[i].equals(stringValue)) {
<a name="61" href="#61">61</a>                              converted = Boolean.FALSE;
<a name="62" href="#62">62</a>                          }
<a name="63" href="#63">63</a>                      }
<a name="64" href="#64">64</a>                  }
<a name="65" href="#65">65</a>              }
<a name="66" href="#66">66</a>          }
<a name="67" href="#67">67</a>  
<a name="68" href="#68">68</a>          <strong>if</strong> (converted == <strong>null</strong>) {
<a name="69" href="#69">69</a>              <strong>throw</strong> <strong>new</strong> UnsupportedOperationException(<span class="string">"Boolean conversion exception: Cannot convert ("</span>+value+<span class="string">") of type ("</span>+value.getClass()+<span class="string">") into boolean"</span>);
<a name="70" href="#70">70</a>          }
<a name="71" href="#71">71</a>          <strong>return</strong> converted;
<a name="72" href="#72">72</a>      }
<a name="73" href="#73">73</a>  
<a name="74" href="#74">74</a>      <em class="comment">// code derived form the commons beanutils converters</em>
<a name="75" href="#75">75</a>  
<a name="76" href="#76">76</a>      <em>/**<em>*</em></em>
<a name="77" href="#77">77</a>  <em>     * The set of strings that are known to map to Boolean.TRUE.</em>
<a name="78" href="#78">78</a>  <em>     */</em>
<a name="79" href="#79">79</a>      <strong>private</strong> String[] trueStrings = {<span class="string">"true"</span>, <span class="string">"yes"</span>, <span class="string">"y"</span>, <span class="string">"on"</span>};
<a name="80" href="#80">80</a>  
<a name="81" href="#81">81</a>      <em>/**<em>*</em></em>
<a name="82" href="#82">82</a>  <em>     * The set of strings that are known to map to Boolean.FALSE.</em>
<a name="83" href="#83">83</a>  <em>     */</em>
<a name="84" href="#84">84</a>      <strong>private</strong> String[] falseStrings = {<span class="string">"false"</span>, <span class="string">"no"</span>, <span class="string">"n"</span>, <span class="string">"off"</span>};
<a name="85" href="#85">85</a>  
<a name="86" href="#86">86</a>  
<a name="87" href="#87">87</a>      <strong>public</strong> <a href="../../../../org/azeckoski/reflectutils/converters/BooleanConverter.html">BooleanConverter</a>() { }
<a name="88" href="#88">88</a>  
<a name="89" href="#89">89</a>      <em>/**<em>*</em></em>
<a name="90" href="#90">90</a>  <em>     * Allows the false strings and true strings to be controlled&lt;br/></em>
<a name="91" href="#91">91</a>  <em>     * By default any object whose string representation is one of the values</em>
<a name="92" href="#92">92</a>  <em>     * {"yes", "y", "true", "on", "1"} is converted to Boolean.TRUE, and </em>
<a name="93" href="#93">93</a>  <em>     * string representations {"no", "n", "false", "off", "0"} are converted</em>
<a name="94" href="#94">94</a>  <em>     * to Boolean.FALSE. The recognised true/false strings can be changed using the constructor</em>
<a name="95" href="#95">95</a>  <em>     * in this class and registering it with the {@link ConversionUtils}:</em>
<a name="96" href="#96">96</a>  <em>     * &lt;pre></em>
<a name="97" href="#97">97</a>  <em>     *  String[] trueStrings = {"oui", "o"};</em>
<a name="98" href="#98">98</a>  <em>     *  String[] falseStrings = {"non", "n"};</em>
<a name="99" href="#99">99</a>  <em>     *  Converter bc = new BooleanConverter(trueStrings, falseStrings);</em>
<a name="100" href="#100">100</a> <em>     * &lt;/pre></em>
<a name="101" href="#101">101</a> <em>     * @param trueStrings these strings map to true</em>
<a name="102" href="#102">102</a> <em>     * @param falseStrings these strings map to false</em>
<a name="103" href="#103">103</a> <em>     */</em>
<a name="104" href="#104">104</a>     <strong>public</strong> <a href="../../../../org/azeckoski/reflectutils/converters/BooleanConverter.html">BooleanConverter</a>(String[] trueStrings, String[] falseStrings) {
<a name="105" href="#105">105</a>         <strong>this</strong>.falseStrings = copyStrings(falseStrings);
<a name="106" href="#106">106</a>         <strong>this</strong>.trueStrings = copyStrings(trueStrings);
<a name="107" href="#107">107</a>     }
<a name="108" href="#108">108</a> 
<a name="109" href="#109">109</a>     <em>/**<em>*</em></em>
<a name="110" href="#110">110</a> <em>     * This method creates a copy of the provided array, and ensures that</em>
<a name="111" href="#111">111</a> <em>     * all the strings in the newly created array contain only lower-case</em>
<a name="112" href="#112">112</a> <em>     * letters.</em>
<a name="113" href="#113">113</a> <em>     * &lt;p></em>
<a name="114" href="#114">114</a> <em>     * Using this method to copy string arrays means that changes to the</em>
<a name="115" href="#115">115</a> <em>     * src array do not modify the dst array.</em>
<a name="116" href="#116">116</a> <em>     */</em>
<a name="117" href="#117">117</a>     <strong>private</strong> <strong>static</strong> String[] copyStrings(String[] src) {
<a name="118" href="#118">118</a>         String[] dst = <strong>new</strong> String[src.length];
<a name="119" href="#119">119</a>         <strong>for</strong>(<strong>int</strong> i=0; i&lt;src.length; ++i) {
<a name="120" href="#120">120</a>             dst[i] = src[i].toLowerCase();
<a name="121" href="#121">121</a>         }
<a name="122" href="#122">122</a>         <strong>return</strong> dst;
<a name="123" href="#123">123</a>     }
<a name="124" href="#124">124</a> 
<a name="125" href="#125">125</a> }
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